./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:52:49,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:52:49,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:52:50,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:52:50,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:52:50,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:52:50,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:52:50,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:52:50,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:52:50,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:52:50,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:52:50,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:52:50,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:52:50,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:52:50,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:52:50,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:52:50,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:52:50,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:52:50,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:52:50,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:52:50,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:52:50,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:52:50,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:52:50,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:52:50,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:52:50,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:52:50,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:52:50,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:52:50,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:52:50,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:52:50,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:52:50,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:52:50,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:52:50,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:52:50,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:52:50,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:52:50,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:52:50,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:52:50,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:52:50,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:52:50,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:52:50,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:52:50,117 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:52:50,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:52:50,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:52:50,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:52:50,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:52:50,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:52:50,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:52:50,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:52:50,121 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:52:50,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:52:50,122 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:52:50,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:52:50,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:52:50,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:52:50,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:52:50,123 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:52:50,123 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:52:50,123 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:52:50,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:52:50,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:52:50,123 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:52:50,124 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:52:50,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:52:50,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:52:50,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:52:50,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:52:50,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:52:50,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:52:50,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:52:50,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:52:50,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:52:50,125 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:52:50,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:52:50,126 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:52:50,126 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:52:50,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:52:50,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:52:50,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:52:50,434 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:52:50,434 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:52:50,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-09-01 00:52:51,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:52:51,834 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:52:51,834 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-09-01 00:52:51,847 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a40750ad/b0761c9b84fe4d7496ff3523ef9470f6/FLAGda5cac6be [2023-09-01 00:52:51,864 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a40750ad/b0761c9b84fe4d7496ff3523ef9470f6 [2023-09-01 00:52:51,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:52:51,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:52:51,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:52:51,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:52:51,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:52:51,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:52:51" (1/1) ... [2023-09-01 00:52:51,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a9195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:51, skipping insertion in model container [2023-09-01 00:52:51,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:52:51" (1/1) ... [2023-09-01 00:52:51,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:52:51,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:52:52,384 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-09-01 00:52:52,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:52:52,447 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:52:52,498 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2023-09-01 00:52:52,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:52:52,591 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:52:52,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52 WrapperNode [2023-09-01 00:52:52,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:52:52,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:52:52,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:52:52,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:52:52,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,640 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2023-09-01 00:52:52,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:52:52,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:52:52,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:52:52,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:52:52,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,688 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:52:52,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:52:52,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:52:52,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:52:52,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (1/1) ... [2023-09-01 00:52:52,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:52:52,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:52:52,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:52:52,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:52:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:52:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 00:52:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 00:52:52,783 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 00:52:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:52:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:52:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 00:52:52,784 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 00:52:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:52:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:52:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 00:52:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:52:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 00:52:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:52:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:52:52,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:52:52,787 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:52:53,007 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:52:53,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:52:53,407 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:52:53,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:52:53,419 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-09-01 00:52:53,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:52:53 BoogieIcfgContainer [2023-09-01 00:52:53,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:52:53,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:52:53,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:52:53,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:52:53,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:52:51" (1/3) ... [2023-09-01 00:52:53,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502b4668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:52:53, skipping insertion in model container [2023-09-01 00:52:53,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:52" (2/3) ... [2023-09-01 00:52:53,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502b4668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:52:53, skipping insertion in model container [2023-09-01 00:52:53,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:52:53" (3/3) ... [2023-09-01 00:52:53,429 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-09-01 00:52:53,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:52:53,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-09-01 00:52:53,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:52:53,557 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:52:53,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 249 transitions, 520 flow [2023-09-01 00:52:53,736 INFO L130 PetriNetUnfolder]: 52/481 cut-off events. [2023-09-01 00:52:53,739 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2023-09-01 00:52:53,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 481 events. 52/481 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2230 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2023-09-01 00:52:53,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 249 transitions, 520 flow [2023-09-01 00:52:53,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 241 transitions, 498 flow [2023-09-01 00:52:53,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:52:53,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 241 transitions, 498 flow [2023-09-01 00:52:53,772 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 241 transitions, 498 flow [2023-09-01 00:52:53,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 241 transitions, 498 flow [2023-09-01 00:52:53,888 INFO L130 PetriNetUnfolder]: 48/461 cut-off events. [2023-09-01 00:52:53,889 INFO L131 PetriNetUnfolder]: For 4/7 co-relation queries the response was YES. [2023-09-01 00:52:53,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 461 events. 48/461 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2121 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 226. Up to 8 conditions per place. [2023-09-01 00:52:53,909 INFO L119 LiptonReduction]: Number of co-enabled transitions 19536 [2023-09-01 00:53:00,856 INFO L134 LiptonReduction]: Checked pairs total: 55549 [2023-09-01 00:53:00,857 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-09-01 00:53:00,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:00,875 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4650c824, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:00,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:53:00,886 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2023-09-01 00:53:00,887 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:53:00,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:00,888 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:53:00,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:00,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2020091176, now seen corresponding path program 1 times [2023-09-01 00:53:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895038424] [2023-09-01 00:53:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:01,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:01,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:01,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:01,158 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:53:01,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:53:01,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:53:01,161 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:01,167 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:53:01,168 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:01,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:53:01,255 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:53:01,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 387 transitions, 822 flow [2023-09-01 00:53:01,557 INFO L130 PetriNetUnfolder]: 191/1424 cut-off events. [2023-09-01 00:53:01,557 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2023-09-01 00:53:01,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 1424 events. 191/1424 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9711 event pairs, 2 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 888. Up to 32 conditions per place. [2023-09-01 00:53:01,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 387 transitions, 822 flow [2023-09-01 00:53:01,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 381 transitions, 810 flow [2023-09-01 00:53:01,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:53:01,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 348 places, 381 transitions, 810 flow [2023-09-01 00:53:01,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 348 places, 381 transitions, 810 flow [2023-09-01 00:53:01,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 381 transitions, 810 flow [2023-09-01 00:53:01,888 INFO L130 PetriNetUnfolder]: 191/1414 cut-off events. [2023-09-01 00:53:01,888 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2023-09-01 00:53:01,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 1414 events. 191/1414 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9658 event pairs, 2 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 880. Up to 32 conditions per place. [2023-09-01 00:53:02,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 77748 [2023-09-01 00:53:10,601 INFO L134 LiptonReduction]: Checked pairs total: 252346 [2023-09-01 00:53:10,601 INFO L136 LiptonReduction]: Total number of compositions: 293 [2023-09-01 00:53:10,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:10,605 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4650c824, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:10,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:53:10,616 INFO L130 PetriNetUnfolder]: 13/135 cut-off events. [2023-09-01 00:53:10,617 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 00:53:10,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:10,617 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:53:10,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:10,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1281124566, now seen corresponding path program 1 times [2023-09-01 00:53:10,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:10,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725433343] [2023-09-01 00:53:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:10,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:10,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:10,694 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:10,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:53:10,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:53:10,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:53:10,695 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:10,696 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:53:10,697 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:10,697 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:53:10,782 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:53:10,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 477 places, 525 transitions, 1128 flow [2023-09-01 00:53:11,984 INFO L130 PetriNetUnfolder]: 664/3975 cut-off events. [2023-09-01 00:53:11,984 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2023-09-01 00:53:12,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4426 conditions, 3975 events. 664/3975 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32828 event pairs, 52 based on Foata normal form. 0/2920 useless extension candidates. Maximal degree in co-relation 2558. Up to 192 conditions per place. [2023-09-01 00:53:12,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 477 places, 525 transitions, 1128 flow [2023-09-01 00:53:12,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 471 places, 519 transitions, 1116 flow [2023-09-01 00:53:12,081 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:53:12,081 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 471 places, 519 transitions, 1116 flow [2023-09-01 00:53:12,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 471 places, 519 transitions, 1116 flow [2023-09-01 00:53:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 471 places, 519 transitions, 1116 flow [2023-09-01 00:53:13,410 INFO L130 PetriNetUnfolder]: 664/3963 cut-off events. [2023-09-01 00:53:13,411 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2023-09-01 00:53:13,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 3963 events. 664/3963 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32774 event pairs, 52 based on Foata normal form. 0/2920 useless extension candidates. Maximal degree in co-relation 2548. Up to 192 conditions per place. [2023-09-01 00:53:13,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 172656 [2023-09-01 00:53:23,994 INFO L134 LiptonReduction]: Checked pairs total: 575040 [2023-09-01 00:53:23,995 INFO L136 LiptonReduction]: Total number of compositions: 394 [2023-09-01 00:53:23,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:23,998 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4650c824, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:23,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:53:24,027 INFO L130 PetriNetUnfolder]: 50/364 cut-off events. [2023-09-01 00:53:24,027 INFO L131 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2023-09-01 00:53:24,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:24,028 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:53:24,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:24,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash -537596015, now seen corresponding path program 1 times [2023-09-01 00:53:24,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:24,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412276390] [2023-09-01 00:53:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:24,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:24,081 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:24,081 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:24,082 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:53:24,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:53:24,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:53:24,082 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:24,083 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:53:24,083 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:24,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:53:24,148 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 00:53:24,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 600 places, 663 transitions, 1438 flow [2023-09-01 00:53:28,164 INFO L130 PetriNetUnfolder]: 2659/12562 cut-off events. [2023-09-01 00:53:28,164 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2023-09-01 00:53:28,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14727 conditions, 12562 events. 2659/12562 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 124869 event pairs, 626 based on Foata normal form. 0/9487 useless extension candidates. Maximal degree in co-relation 7903. Up to 1024 conditions per place. [2023-09-01 00:53:28,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 600 places, 663 transitions, 1438 flow [2023-09-01 00:53:28,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 594 places, 657 transitions, 1426 flow [2023-09-01 00:53:28,582 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:53:28,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 594 places, 657 transitions, 1426 flow [2023-09-01 00:53:28,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 594 places, 657 transitions, 1426 flow [2023-09-01 00:53:28,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 657 transitions, 1426 flow [2023-09-01 00:53:32,683 INFO L130 PetriNetUnfolder]: 2659/12548 cut-off events. [2023-09-01 00:53:32,687 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2023-09-01 00:53:32,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14713 conditions, 12548 events. 2659/12548 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 124474 event pairs, 626 based on Foata normal form. 0/9487 useless extension candidates. Maximal degree in co-relation 7891. Up to 1024 conditions per place. [2023-09-01 00:53:33,908 INFO L119 LiptonReduction]: Number of co-enabled transitions 304920 [2023-09-01 00:53:45,023 INFO L134 LiptonReduction]: Checked pairs total: 1018968 [2023-09-01 00:53:45,024 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-09-01 00:53:45,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:45,033 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4650c824, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:45,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:53:45,086 INFO L130 PetriNetUnfolder]: 102/641 cut-off events. [2023-09-01 00:53:45,086 INFO L131 PetriNetUnfolder]: For 86/94 co-relation queries the response was YES. [2023-09-01 00:53:45,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:45,086 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:53:45,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:45,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1988557307, now seen corresponding path program 1 times [2023-09-01 00:53:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:45,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302390154] [2023-09-01 00:53:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:45,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:45,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:45,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:45,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:53:45,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:53:45,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:53:45,177 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:45,178 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:53:45,178 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:45,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:53:45,271 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 00:53:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 723 places, 801 transitions, 1752 flow [2023-09-01 00:54:05,415 INFO L130 PetriNetUnfolder]: 11792/45761 cut-off events. [2023-09-01 00:54:05,416 INFO L131 PetriNetUnfolder]: For 10450/10545 co-relation queries the response was YES. [2023-09-01 00:54:07,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56187 conditions, 45761 events. 11792/45761 cut-off events. For 10450/10545 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 545453 event pairs, 4296 based on Foata normal form. 0/35414 useless extension candidates. Maximal degree in co-relation 28374. Up to 5120 conditions per place. [2023-09-01 00:54:07,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 723 places, 801 transitions, 1752 flow [2023-09-01 00:54:08,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 717 places, 795 transitions, 1740 flow [2023-09-01 00:54:08,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:54:08,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 717 places, 795 transitions, 1740 flow [2023-09-01 00:54:08,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 717 places, 795 transitions, 1740 flow [2023-09-01 00:54:08,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 717 places, 795 transitions, 1740 flow [2023-09-01 00:54:27,626 INFO L130 PetriNetUnfolder]: 11792/45745 cut-off events. [2023-09-01 00:54:27,627 INFO L131 PetriNetUnfolder]: For 10450/10545 co-relation queries the response was YES. [2023-09-01 00:54:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56171 conditions, 45745 events. 11792/45745 cut-off events. For 10450/10545 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 545487 event pairs, 4296 based on Foata normal form. 0/35414 useless extension candidates. Maximal degree in co-relation 28360. Up to 5120 conditions per place. [2023-09-01 00:54:34,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 474540 [2023-09-01 00:54:47,505 INFO L134 LiptonReduction]: Checked pairs total: 1622488 [2023-09-01 00:54:47,506 INFO L136 LiptonReduction]: Total number of compositions: 601 [2023-09-01 00:54:47,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:54:47,509 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4650c824, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:54:47,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:54:47,597 INFO L130 PetriNetUnfolder]: 181/1032 cut-off events. [2023-09-01 00:54:47,597 INFO L131 PetriNetUnfolder]: For 181/193 co-relation queries the response was YES. [2023-09-01 00:54:47,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:54:47,597 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:54:47,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:54:47,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:54:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1658078195, now seen corresponding path program 1 times [2023-09-01 00:54:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:54:47,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819202916] [2023-09-01 00:54:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:54:47,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:54:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:54:47,650 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:54:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:54:47,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:54:47,691 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:54:47,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:54:47,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:54:47,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:54:47,692 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:54:47,693 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:54:47,693 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:54:47,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:54:47,778 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 00:54:47,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 846 places, 939 transitions, 2070 flow [2023-09-01 00:56:36,059 INFO L130 PetriNetUnfolder]: 53983/181332 cut-off events. [2023-09-01 00:56:36,060 INFO L131 PetriNetUnfolder]: For 49552/49679 co-relation queries the response was YES. [2023-09-01 00:56:52,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230761 conditions, 181332 events. 53983/181332 cut-off events. For 49552/49679 co-relation queries the response was YES. Maximal size of possible extension queue 2243. Compared 2518420 event pairs, 24930 based on Foata normal form. 0/142909 useless extension candidates. Maximal degree in co-relation 113222. Up to 24576 conditions per place. [2023-09-01 00:56:52,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 846 places, 939 transitions, 2070 flow [2023-09-01 00:57:00,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 840 places, 933 transitions, 2058 flow [2023-09-01 00:57:00,279 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:57:00,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 840 places, 933 transitions, 2058 flow [2023-09-01 00:57:00,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 840 places, 933 transitions, 2058 flow [2023-09-01 00:57:00,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 840 places, 933 transitions, 2058 flow